A study of silica and iron recovery from the iron ore concentration tailing is presented. The residue is composed of 40.1% Fe, 33.4% SiO2, 8.31% Al2O3, 0.08% P, and 0.34% MnO. The developed process of silica and iron recovery consisted of size classification, magnetic separation, and removal of impurities by leaching. A concentration of SiO2 from 33.4% to 67.0%, with 60.0% of mass reduction
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centration by flotation carried out with a fraction of iron ore made up of the magnetic separation tailing. The study into the recovery of this material carried out in a pilot unit scale had as its main objective, the production of an iron concentrate meeting standards required for commer- cialisation i.e. Fe and SiO2 content of around 66% and
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The magnetizing reduction trials of iron ore followed by magnetic separation has indicated that the ore has been concentrated to 64.13% Fe grade with 83.70% recovery starting from a crude ore
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Jun 20, 2018 Li C, Suna H, Baic J, Lia L (2010) Innovative methodology for comprehensive utilization of iron ore tailings. Part 1: the recovery of iron from iron ore tailings using magnetic separation after magnetizing roasting. J Hazard Mater 174:71–77. Article CAS Google Scholar 19
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The studies on hydrocyclone and magnetic separation had indicated that an iron concentrate of 61 - 65 per cent Fe could be obtained by recovering 59 - 78 per cent of the iron values present in the slimes. Depending on the nature of the slimes the alumina and silica levels have been brought down to 2.5 and 1.0 per cent respectively
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Aug 08, 2019 Yu J, Han Y, Li Y, Gao P (2017) Beneficiation of an iron ore fine by magnetization roasting and magnetic separation. Int J Miner Process 68:102–108. Article Google Scholar 8. Kumar R, Mandre NR (2017) Recovery of iron from iron ore slimes by selective flocculation. J South Afr Inst Min Metall 117:397–400
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Nov 10, 2017 A high grade concentrate containing 65.4 wt% iron with an iron recovery of 92.7% was achieved by magnetic separation with a grinding fineness of 85 wt% passing 38 μm. The results demonstrated that the application of magnetization roasting in iron ore beneficiation was prospective to the efficient exploitation and utilization of refractory iron
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Jan 23, 2004 In order to investigate the effect of particle size on the recovery of magnetite particles in a low intensity magnetic separator, different size fractions of magnetite, alone and mixed with the same size quartz particles at a 0.5–0.5 ratio were subjected to magnetic separation tests in a Davis tube tester. The results are given in Fig. 1
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Compared with WHIMS-2000 wet high-intensity magnetic separator, the grade of the concentrate is by 7.21% higher the grade of the tailings lower by 5.41% and the iron recovery higher by 7.36%
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Recovery of Nickel and Processing of Magmatic Sulfide Ores. The processing of magmatic sulfide ores differs from laterites: sulfide ores are crushed in multiple steps to separate the ore minerals from the gangue. At each stage the ore is separated by size, using vibrating screens, as well as magnetic separation of iron-rich pyrrhotite
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The fly ash from most of the U.S. bituminous coals contains 15 to 20 weight percent iron oxides, 50% or more of which can be recovered by dry magnetic separation as a high density fraction. The density of this fraction is 3.5 to 4.0 g/cm/sup 3/, depending on the fly ash
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Feb 15, 2007 Effective separation of iron values from iron ore slimes using a wet magnetic separator and selective magnetic coating is reported. The selectivity of coating for enhancing the magnetic response of iron particles was achieved by controlling the surface properties of the particles, i.e., electrokinetics potential, through pH adjustment and use of sodium hexa-metaphosphates as the
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Sep 08, 2020 This shows that under the same grinding particle size, the combined process of flotation and magnetic separation can obtain iron concentrates with low sulfide content and sulfide concentrates with high recovery rate. Second, Weakly magnetic iron ore . 1.Single weakly magnetic iron ore . Single weakly magnetic iron ore mainly includes hematite
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Mar 01, 2012 The dry magnetic separation results were judged as acceptable for the rough processing stage, while the products of the wet magnetic separation were the high-grade iron ore concentrates. The two-stage beneficiation tests on complex hematite-magnetite ores demonstrated much higher cumulative iron recovery from the test ore
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Recovery ratio is the percentage of the total mineral or metal contained in the ore that is recovered from the concentrate, which is given by the following
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magnetic separation. Dry Magnetic Separation of Iron Ore: There are many inherent advantages in processes that utilize dry magnetic separation to
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A magnetic concentrate with 86.39wt.%TFe and 96.21wt.%Fe recovery as well as a non-magnetic product with 54.84wt.%TMn and 85.96wt.%Mn recovery were obtained when
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materials. A magnetic separation for processing iron from fly ash as reported by Prakash successes to remove around 92% iron using magnetic coating at up to
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Aug 25, 2018 The results indicated that spiral separation yields higher separation efficiency than others. The combination of spiral and multi gravity methods showed that the
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Jan 01, 2015 In general, the maximum change in the total iron content was 3.6% at 7A in the winding of the separator. Nevertheless, the greatest iron content (49.8%) is still below
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Oct 04, 2018 Magnetic Separation and Iron Ore Beneficiation. Magnetic separation is an old technique for the concentration of iron ores and for the removal of tramp iron
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